Friends do not treat friends the way these people do. Friends to him is like friends w/benefits. He wants to come across to others as the good guy and be able to tell others that you are okay w/the way everything went down. He wants to keep the door open so that if he needs something, you'll drop what you are doing and accommodate his needs (whatever he wants or needs at the moment).
Sure, you can remain civil and/or friendly, but I hope he doesn't disappoint you w/his definition of being friends.
Michele talks about the180 technique in Divorce Remedy. She describes it as doing the exact opposite of what you have been doing.
That list of points that you linked to is not in DR. I don't know if that list originated with Michele, or if it started as a reader's attempt to provide more details.
Certainly, for many of the people who come to this site, following the list is doing the opposite of what they've been doing.
I highly recommend reading Michele's books. Don't just read the forum.
Me: 44 H: 44 Kids: 20, 16, 16, and 10 Together/Married: 22 years H announced he was emotionally detached and considering D: 4/4/16 H announced he is going to try to stay and reconnect: 5/1/16